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Which of the following statements is FALSE in regard tomicrotubule assembly:Group of answer choicesA. The assembly of microtubules is dependent on theconcentration ...

Question

Which of the following statements is FALSE in regard tomicrotubule assembly:Group of answer choicesA. The assembly of microtubules is dependent on theconcentration of tubulin dimers.B. The assembly of microtubules requires the binding of GTP totubulin dimers.C. The assembly of microtubules requires the hydrolysis ofGTP.D. The assembly of microtubules requires nucleation.

Which of the following statements is FALSE in regard to microtubule assembly: Group of answer choices A. The assembly of microtubules is dependent on the concentration of tubulin dimers. B. The assembly of microtubules requires the binding of GTP to tubulin dimers. C. The assembly of microtubules requires the hydrolysis of GTP. D. The assembly of microtubules requires nucleation.



Answers

Which of the following statements are correct? Explain your answers. A. Centrosomes are replicated before $\mathrm{M}$ phase begins. B. Two sister chromatids arise by replication of the DNA of the same chromosome and remain paired as they line up on the metaphase plate. C. Interpolar microtubules attach end-to-end and are therefore continuous from one spindle pole to the other. D. Microtubule polymerization and depolymerization and microtubule motor proteins are all required for DNA replication. E. Microtubules nucleate at the centromeres and then connect to the kinetochores, which are structures at the centrosome regions of chromosomes.

So the question here asked us which of the following statements are gonna be correct here. So for a here, it states that center travels are replicated before the M phase begins. So if we recall here, center stones replicate during interphase, which is before the M phase begins. So this is gonna be a correct statement for be here. It states that to sister committed, arrived by replication of the DNA of the same chromosome, remain paired as a lie up on the meta phase plate. So we know that sister primitive separate completely. Only at the start of Anna phase here hence the sequence and a phase. So this Give me a true statement for see here. It states that inter polar micro tubules attached end to end and are therefore continuous from one suitable to the other. We know that the ends of inter polar micro tubules overlap and attached to one another via proteins including motor proteins, for example acted and dying in that bridge between the micro tubules. So this is not a correct answer here for deep. It states that micro tubules, politicalization and deep polarization and micro Tokyo motor proteins are all required for DNA replication. So we know that micro tubules in their motor proteins played no role in the actual replication itself. However, they're just there for separating it out. So that cannot be a true statement. And lastly, for eat, it stays micro tubules, nuclear at the sentry ums, centrism, central news rather and then connected the kinetic orders, which is structures of the centrism regions of chromosomes. So we know that for this to be a correct statement, the terms Central Mirror and centers soon must be switched here, So that is not gonna be a correct statement.

Already is. We have Ah, Chapter four problem 19 here we have four statements and we're looking for which one is false Will just read through The 1st 1 is asking this about the location of actin filaments. And so if we have an acting fell mint, it's what the green here be this actin filament that's gonna be attached to some motor molecules. We're gonna have some motor molecules. The head's coming and compact with this actin filament and those motor molecules attached to come in contact with here the membrane. So the act in film in't is in fact just located under the plasma membrane. So at first statement is true. The next one is asking what? The structure of a micro to you Another micro two broken has his centerpiece. And from that you get some arms untouched to those each our Steven, smaller pieces and those would be a micro tubular triplet, right? So they kind of film space here between each each arm goes all the way around and do that process you serve in the with a tube shifting Well, well, it's the centerpiece here. This inner inner rings is call the central zone central assume and and it is responsible for organizing through all these other pieces that branch out to create that will eventually be our tube. And so the second statement is also true. The next one is asking is what? Intermediate filaments, Um, and no intermediate film. It is very similar to enact in filament that we had before. The difference is only in size. If we have an intermediate filament, immediate filament is gonna have the same structure as before. So I'm gonna have we have the mood or molecules that come into contact with it and then Watson remembering or in some instances, it can certainly be that it's a poorly in nuclear envelope that was a different part of a body and and sell. And so and so This third statement is also true. And so the last one about motor molecules by process of elimination must be false with the motor molecule isn't in charge of movie materials, is actually in charge of moving the cell itself. And so that statement is going to be our false one

Hey everybody today we're talking about mitosis. So I've drawn out the different stages here. Um you are welcome to do so as well. I would suggest pausing and trying to figure out what these are and then we'll go through them. Okay, so with our question is asking us to figure out which of these options that's giving us is not a part of mitosis. So I think it's important Two look at this and be able to draw these out. I know that this isn't the best drawing in the whole world but it'll help. So let's go through it. So mitosis is very important. Um Obviously something that you hear about a lot, it's probably something you learned about and at least ap biology. And if we're starting at the very beginning here, we're gonna have our interphase which is stage one. Um And with the red, that's gonna be referring to our Central Soames. So that's what these little things are. And then for X. Um I'm just writing chromosome that way. For some reason a lot of people do the two end is referring to the nucleus. This process right here is where the D. N. A. Is copied. And then in pro phase we're going to have the chromosomes pair up and yeah, so see how it was just a line and then it becomes green and blue. But their Central Soames, on the other hand we're going to have on the end over here now as opposed to up there, it's still up here actually. I'd say it's right here in pro face. So these are where your center uh some are going to be in pro face. So then they're gonna be pulling apart. Or working at that. My topic spindle. The chromosomes are gonna line up at that equator M equals middle. Okay, so middle as an equator, middle as in the middle phase. Um there. So you're having a my topic spindle, which is made of micro tubules. And then our next stages and a face. And the sister chroma heads are going to pull apart during an a face to see that X. That was green. Now it's like half the X. Half X. And it's going to each side. Then this membrane is going to be formed kind of like A cherry or something. And then there'll be two sides. And this is going to make two identical daughter cells and they're each going to be to add and then the process restarts. So now that we know that let's go through our specific question. So I'm gonna write queue over here. I think I have a B C. D. And E. So which incorrect? There's no reason to write it all out. But which about these might uh that are about my joseph is correct. So A is talking about micro tubules from the spin nipples attaching to Connecticut ors um on the chromosomes that is going to be true Kinetic ors this is kind of dealing with meta phase. The Middle one in that kinetic Ors kinetic, they are beginning to shorten in size and they're pulling toward the spindle poles. Okay, right there. So that one is gonna be true. Which means it's not what we're looking for. B anna phase. The spindle separates sister Crowe motives and pulled them apart. So and a face sister religions pulled apart were to even have that written down. So we know that's not wrong. See um dealing again with meta phase spindle micro tubules align the chromosomes that spindle midpoint. We just talked about meta equals middle. That is going to be true, meaning it's wrong. D psychokinesis describes the movement of chromosomes. So psychokinesis is that last one that's there with tele face. And that's actually referring to think cytoplasm so that membrane is going to be formed there and then they're gonna separate. So it's referring to that cell membrane compressing at that cell equator which is then going to create a furrow. So that one is gonna be wrong, meaning it's what we're looking for. And then e. Is going to be talking about that furrow and it's at that middle. And we just talked about that. So the answer is d I hope you learned something. Have a lovely day

What is something false that we can say about the process of mitosis? Something false that we can say with regards to my toes? This is homologous chromosomes synapse in pro phase. Yeah, this is false because homologous chromosomes do not synapse in pro phase.


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